Someday, left-over toner in discarded printer cartridges could have a second life as bridge or building components instead of as trash, wasting away in landfills and potentially harming the environment. A research group reports that they have devised a method to recycle the residual powder in ‘empty’ cartridges into iron using temperatures that are compatible with existing industrial processes.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2017/11/171115115008.htm
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